////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2011-2021 The Octave Project Developers
//
// See the file COPYRIGHT.md in the top-level directory of this
// distribution or <https://octave.org/copyright/>.
//
// This file is part of Octave.
//
// Octave is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Octave is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Octave; see the file COPYING.  If not, see
// <https://www.gnu.org/licenses/>.
//
////////////////////////////////////////////////////////////////////////

#if ! defined (octave_history_dock_widget_h)
#define octave_history_dock_widget_h 1

#include <QCheckBox>
#include <QComboBox>
#include <QLineEdit>
#include <QListView>
#include <QSortFilterProxyModel>
#include <QStringListModel>

#include "octave-dock-widget.h"

namespace octave
{
  class base_qobject;

  class history_dock_widget : public octave_dock_widget
  {
    Q_OBJECT

  public:

    history_dock_widget (QWidget *parent, base_qobject& oct_qobj);

    ~history_dock_widget (void) = default;

  signals:

    //! Signal emitted whenever the user double-clicks a command in the
    //! history.

    void command_double_clicked (const QString& command);

    //! Signal emitted whenever the user selects commands and chooses
    //! "Create script" from the popup menu.

    void command_create_script (const QString& commands);

  public slots:

    void set_history (const QStringList& hist);
    void append_history (const QString& hist_entry);
    void clear_history (void);
    void save_settings (void);
    void notice_settings (const gui_settings *);

  private slots:

    void update_filter_history (void);
    void filter_activate (bool enable);

    void ctxMenu (const QPoint& pos);
    void handle_double_click (QModelIndex modelIndex);
    void handle_contextmenu_copy (bool flag);
    void handle_contextmenu_evaluate (bool flag);
    void handle_contextmenu_create_script (bool flag);
    void handle_contextmenu_filter (void);

    void copyClipboard (void);
    void pasteClipboard (void);
    void selectAll (void);

    virtual void handle_visibility (bool visible);

  private:

    void construct (void);
    void set_filter_focus (bool focus);

    QListView *m_history_list_view;
    QSortFilterProxyModel m_sort_filter_proxy_model;

    //! Stores the current history_model.

    QStringListModel *m_history_model;

    QCheckBox *m_filter_checkbox;
    QComboBox *m_filter;
    QWidget *m_filter_widget;
    bool m_filter_shown;

    enum { MaxFilterHistory = 10 };
  };
}

#endif
